Combination switch and lightning-arrester.



s w. WOOD &, E. T. THOMA.

COMBINATION SWITCH AND LIGHTNING ARRESTER. APPLICATION FILED MAY 25,1909.

946,418. Patented Jan. 11,1910. v ZSHEETS-SHEET 1.

F "a" f 1 WITNESSES [NVENTORS S. W. WOOD & E. T. THOMA. v COMBINATIONSWITCH AND LIGHTNING ARRESTER.

Patented Jan. 11, 1910.

2 SHEETS-SHEET 2.

APPLIOATION FILED MAY 25, 1909.

W1 TNESSES I To an whom it may concern:

SAMUEL w. woop AND EDWIN r.

THOMA, on. LOOKEBA, oKLAfio us,

ooiuisxnatrion .swrrcrr aim LIGHTNING-ARRES'IER. V

Specification of Letters Patent, Patentedflainl 11-, 1910.

Application filed May 25, 1909 Serial 498,341.

Be it known that we, SAMUEL XV. VVoon and EDWIN T. Triomn, citizens ofthe United States, residing at Lookeba, in the county f Caddo and Stateof Oklahoma, have inv ventedcertain newv and useful Improvements inCombination Switches and Lightning-Arresters; and we do hereby declarethe following to be a. full, clear; and exact description of theinvention, such as will enable others skilled in the art to' which itappertains to make and use the same.

()ur invention relates to new and usefulimprovements in combinationswitch and lightning arresters and more particularly to that classadapted to be used in connection withtelephon'e or telegraph instrumentsand our ob ect-ist-oprovide meanj'sfor' preventing the instrument frombecoming injured by lightning,

A further object is to provide means for operating a switch fordisconnecting the main wire from the telephone.

A further object is'to provide carbons and bridge the current aroundsaid carbons and a further object is to convey the current passingthrough the carbonsto the ground and a still further object is toprovide carbons between the bridged circuit and the ground wire.

' Other objects and advantages will be hereinafter referred to and moreparticularly pointed out in the claims.

Inthe accompanying drawings forming part of this application, Figure 1is a plan view of our improved lightning arrester, showing a doubleswitch and telephone connection. Fig. 2 is an edge elevation thereofshowing the cover thereof in section. Fig.

3 is an elevation of a single switch and phone.connection, and, Fig. .4isanedge elevation thereof. E;

Referring to the drawings in whlch sum-1, lar reference numeralsdesignate corresponding parts throughout the several views, 1

indicates a base, which is preferably constructed of slate, porcelain orsimilar nonconducting substance and to said base are attached posts 2and 3, said posts being preflerably placed adjacent the opposite edgesof the base, the upper ends of said postsbeing bifurcated to receiveswitch levers 4 and 5, respectively, said levers being pivotally se-,cured to the posts.

The levers 4 and 5 are connected together adjacent one of their ends bymeans of a.

bridge plate 6-, wl1ereby an electric current may pass from one lever tothe other through the bridge plate, while immediately between the-posts2and 3 are placed a plurality of carbon blocks 7, said blocksbeing held in position on the base by attaching to -the posts 2 and 3,spring plates 8 and 9, respectively, which engage channels 10 in theouter faces of the outer blocks 7 and direct inwardpressure thereon, thetension ofthe spring plates being such as to" securely hold the blocksin place.

The meeting faces of theblocks 7 hre preferably corrugated to increasethe resistance thereof and between the plates are locatedinsulatingstrips 1]., whic strips, however are very thin andfbetween thetwocentral blocks 'i'ssfiured 'oneend {of I a be r 12, while to ptheopposi-te .end offs'aid v bar, is'-.-a ttached a ground'wire13,whereby anycurrentpassing through the carbon blocks and the bar 12 willbe conducted directito. the round.-

The ends of the lever 4 engaging the-plate 6 are adapted to engagespring jacks 14: and 15, when said ends are moved inwardly and to thesesprin jacks are attached sprin fingers 16 and'l I respectively, betweenWhi are introduced one end offuses 18 and 19, respectively, the oppositeends "of said fuses being likewise introduced between spring fingers 20and 21, respectively on posts 22 and 23, respectively, and to thesepostsare attached phone W1res,2t and 25. The opposite ends-of the levers iand 5 arealso adapted to engage spring jacks 26 and 27,

respectively, when said ends are moved inwardly, the operation'of movingsaid ends into engagement with the jacks. 26 and 27 disengaging theopposite ends of the levers from the jacks 14 and 15 and by providingthefjacks 26 and 27 with extensions 28 and 29, respectively,tliecurrent'will be conveyed from the levers-through the jacks and intothe ground wire 13."

Positioned between the extensionsv28 and T the lower end of the bar 12are auxiliary carbon blocks,30, which are held in position b means ofspring'fingers3l, which are ariihiged in' pairs on opposite sides of thebar 12., the meeting faces of the auxiliary blocks bein likewisecorrugated and separated by insufiitingstrips 32 and by this means thecurrent in the levers 4 and 5 will be held against passing into theground wire 13 when the volta e is normal, but should the volts e becomeainormal, it will pass through t e 35 wireattachedto saidconductor barand an wire; It will likewise be seen that :the tele phones will'bofullyprot ted hour-injury and ground wiregit will be-ircadily seen;

n'ected flOlnfthQt8lCi)l1Q11' Wl16S they will act as a return for-whatis commonly known as sneak currents in view ofl'he auxiliz'lrvcarbonblocks between the levers and ground from excess voltage by :disconnecting -the M device of'vthe class describedythe mombinationwithtelephone -wires'.'and line wires}, of a'nonconducting base, a-leverpii j; otcd "adj'ace'ntjto itslongitudinal center, pivot-{ jacksengngcdl'ri' the ends of saidIlever,ad-- acks, one junta osed 'with.

relation to one of the first referre ito;s'p ring,- jacks; fuse between.the l last referred -to levers from the telephone wires orby 'pro-'Yldlng the fuses as shown and it will l kewise be seen that thep'arts'ofthe device are protected from injury froln'the el\jccss"\ ol tagebyproviding the ground ,WHTO. and the resistance as shown. lhat--\ \"eelann 152: 4

supporting means for saidjlever, springditional spr ng spring cks randthe telephone "wires, a

' ln'idge i1 ien1b'er,'1nean s efi'ecting connectionbetween said bridgeinen'iberand' said lever, carbon blocks interpiosedbetwecn said 'tele-'phone wires and line wiresfa -condu ctor bar' conn'ected to -sa1dcarbonblocks, aground auxiliary; carbon block arranged between said leverfand,the ground wire.

2. A device 'ofthe class described, comprising telephone wires and line.wires, ta 'nonoonducting base, levers-piv0ted adjacenttheir'longltudinal centers, posts secured to i said base and formingsupports for the piv ots of said levcr,- s pring-jacks' at each end ofsaid levers,f additional spring-jacks one j 11xtaposed with relation tothefirst referred to spring j'aclzs, fuses between the last referred tospringacks andthe telephone wires, a

bridge member'effecting connection between said levers, carbon membersinterposedabea tween said telephone wires andfsaid .line

,-wires,' 21 conduetor bar connected tofsaid carbon"blocks',""5 ound wre-comectdto said conductor bar; and auxiliary blocks ar- 'wire. a Adevice oftlieUclaS'S' desc ed comcent to' their longitudinal-centers to.said posts, spring-jacksrat the ends of said levers,

'fivire attached Tto said conddctor barfan '1 ling the circuit.-

jacks, 'f uses between theilast {referred to plates, a- 'bridgemember-effecting connection thin insulatingfstrips interposedbetween.said "auxiliaryr oarbon blocks, said carbon contact with sa'id strips.

AMUEL w; woes.- f

4 ranged betwen 'said leverswidths-ground '55' that the breaking-10f thecircuit of the line r and telephone wires will. not; interfielfe with orinterruptthe circuit in tlie line or other; telephones on the -line. andit willflikewis'e' be" seen that when the levers arejdiscon :prisingl-ine'avires-and telephone 'Wiresfa l b"ase member,.posts' secured to'sa'1d base member for said wl're's', levers pivoted -ad a-'- '60 a (l d'.ti oi1a1 spring-j acks, "one j uxta'pqged with l' l H011 to h filfneferreditospringj aeks,'.- and fuses betweenthelastreierred tqsp ih' 5jack-s and the telephonejwireg abridg memg' carbon blocks interposedbetween said tele- I phone wires 2111(lz11116 w res, a conductor barf iconnect.ec l' to .saidcarbon blocks, a. ground 7 0 auxiliary, carbonfblo'k fian angedn between I said levers and saidground-w1re,--andmeans"- engagementof'saidleversfwi th the jfirst re-'famed-to spring-jacks -igrmalnngandbreak- 4i A device f thef-cha racterdescribed,

comprising-teleph one wires and line wires; a =nonc'onduct1ng base,p'osts secured to "sa d-8Q) 1-tudinal-centers;- upon said post's, spin'-'jaeks-'engaged at the ends of said levers,a ditional springjacks;one'juxtaposed-with relation to {one of'the-first}referredtospringgB5 vspring-j aoks'. and theftelephonewires, spring-'3,

between said levers; carbon blocks interposed. f .betiinaen said 1spring-plates and, said "levers, .a conductor bar connected to certainof" said carbon block's,'-.thin"insulatingstrips inter; posed betweensaid "carbon blocks, a ground wire. attached to said conductor bar;auxiL'; T ia'ry carbon-blocks arrangedbetween said-" levers andsaidconductor bar, addition'alf:

'- blocks tal so' hav jg f ig u fi ces of .v 1 109 lntestimony whereofweeha've signed our .J" -EDWINT. THOMA Fmn'cns M.

